Answer: We are using ALSA audio library, please go to its offical website to download relative material. You would better confirm the ALSA version you used on your target board before downloading. Please get into file system and input: cat /proc/asound/version <br>

Answer: We are using ALSA audio library, please go to its offical website to download relative material. You would better confirm the ALSA version you used on your target board before downloading. Please get into file system and input: cat /proc/asound/version <br>

After you confirmed the ALSA version, please download alsa-utils-xxx from:<br>

After you confirmed the ALSA version, please download alsa-utils-xxx from:<br>

http://www.alsa-project.org/main/index.php/Main_Page <br>

http://www.alsa-project.org/main/index.php/Main_Page <br>

There are source codes of aplay, arecord and more others for your reference.<br>

There are source codes of aplay, arecord and more others for your reference.<br>

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=WinCE problem=

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==Why need touch screen calibration every time when getting into WinCE system?==

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Answer: Because Embest provides 4.3-inch and 7-inch LCDs for the board, different LCDs use different touch screen parameters, so it needs calibration every time. <br>

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However, we can solve the problem as below:<br>

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1. Open the Hyper-terminal and boot the WinCE system, do touch screen calibration once and check the Hyper-terminal information, you will see similar sentence like "CalibrationData"="2016,1888 1056,864 992,2912 3040,2976 3072,896"， these are parameters of touch screen.<br>

Hardware problem

Why my new bought 7-inch LCD has no display when power on the board?

Answer: This is a very normal problem. Embest default delivery is preloaded with 4.3-inch LCD image. User needs to change the image for 7-inch LCD. Please follow the document "Devkit8500 Quick User Manual.pdf" included in product DVD.

Why the touch screen could not be used when getting into WinCE system?

Answer: When getting into WinCE system, the LCD displays as below, there is no response if using finger to click the center cross. There might be two reasons:
1. The touch screen is resistive touch screen, we suggest user using touch pen to click the center cross not finger;
2. It needs about one second touching for calibration, if touching time is too short, the operation will be invalid.

Linux problem

How to debug audio applications?

Answer: We are using ALSA audio library, please go to its offical website to download relative material. You would better confirm the ALSA version you used on your target board before downloading. Please get into file system and input: cat /proc/asound/version
After you confirmed the ALSA version, please download alsa-utils-xxx from:http://www.alsa-project.org/main/index.php/Main_Page
There are source codes of aplay, arecord and more others for your reference.

WinCE problem

Why need touch screen calibration every time when getting into WinCE system?

Answer: Because Embest provides 4.3-inch and 7-inch LCDs for the board, different LCDs use different touch screen parameters, so it needs calibration every time.
However, we can solve the problem as below:
1. Open the Hyper-terminal and boot the WinCE system, do touch screen calibration once and check the Hyper-terminal information, you will see similar sentence like "CalibrationData"="2016,1888 1056,864 992,2912 3040,2976 3072,896"， these are parameters of touch screen.
2. Please add the touch screen parameters to BSP path: bsp/file/platform.reg